Chemistry Terms 2
Terms
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- reaction mechanism
- sequence of steps molecules go through on changing from reactants to products
- chemical kinetics
- study of how chemical reaction rates change
- exothermic
- release energy
- endothermic
- absorb energy
- energy-neutral
- neither absorbs or releases energy
- activation energy
- amount of energy that must be availible to reactants before becoming products
- catalyst
- something that increases rate of reaction by lowering activation energy
- enzyme
- catalyst in living systems
- substrate
- reactant molecule that fits into pocket
- active site
- pocket on enzyme
- dynamic equilibrium
- rate of forward reaction equals rate of reverse
- Le Chatelier's Principle
- If you disturb a reaction at equilibrium, the reaction returns to equilibrium by shifting in such a direction as to partially undo the disturbance
- Ksp
- 6.000 x 10^-19
- acid
-
sour taste, red on litmus, eats metals to make H gas
Arrhenius definition: electrolyte that produces H30+ ions in water
Bronsted-Lowry definition: anything that donates a proton - base
-
bitter, dark blue on litmus, produced slippery aqueous solutions
Arrhenius definition: electrolyte that produces OH- ions in water
Bronsted-Lowry definition: anything that accepts a proton - electrolyte
- aqeuous solution of a substance that conducts an electrical current and dissociates into water producing ions
- dissociation
- breaking apart to produce ions
- pH
- -log[H30+]
- buffer
- resists changes in pH
- conjugate base/conjugate acid
- makes up conjugate pair, what buffer is made up of